8321939 has 4 divisors (see below), whose sum is σ = 8427360. Its totient is φ = 8216520.

The previous prime is 8321903. The next prime is 8321941. The reversal of 8321939 is 9391238.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8321939 - 2⁸ = 8321683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8321899 and 8321908.

It is not an unprimeable number, because it can be changed into a prime (8321039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52592 + ... + 52749.

It is an arithmetic number, because the mean of its divisors is an integer number (2106840).

Almost surely, 2^8321939 is an apocalyptic number.

8321939 is a deficient number, since it is larger than the sum of its proper divisors (105421).

8321939 is a wasteful number, since it uses less digits than its factorization.

8321939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105420.

The product of its digits is 11664, while the sum is 35.

The square root of 8321939 is about 2884.7771144406. Note that the first 3 decimals coincide. The cubic root of 8321939 is about 202.6476208561.

It can be divided in two parts, 83 and 21939, that added together give a palindrome (22022).

The spelling of 8321939 in words is "eight million, three hundred twenty-one thousand, nine hundred thirty-nine".